<!DOCTYPE html>
<!-- ！ -->
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>emmet grammar</title>
</head>

<body>
  <!-- div*3 -->
  <div></div>
  <div></div>
  <div></div>

  <!-- ul>li -->
  <ul>
    <li></li>
  </ul>

  <!-- div>span -->
  <div><span></span></div>

  <!-- div+p -->
  <div></div>
  <p></p>

  <!-- .nav -->
  <div class="nav"></div>

  <!-- #banner -->
  <div id="banner"></div>

  <!-- input#username -->
  <input type="text" id="username">

  <!-- .demo$*3 -->
  <div class="demo1"></div>
  <div class="demo2"></div>
  <div class="demo3"></div>

  <!-- div{Lorem ipsum dolor sit amet.} -->
  <div>Lorem ipsum dolor sit amet.</div>

  <!-- div{$}*3 -->
  <div>1</div>
  <div>2</div>
  <div>3</div>
</body>

</html>